Isthmus (Aus)

Straight-track specialist Isthmus (Aus) (I Am Invincible {Aus}) has been handed the G1 Black Caviar Lightning and G1 Newmarket Handicap as targets during the Australian autumn, according to Racing.com. If she continues to excel, the G3 Furphy Sprint heroine will have punched her ticket to an engagement at Royal Ascot in June. The bay won her 800-metre heat during the Caulfield jumpouts on Wednesday morning. She broke her maiden at second asking in a handicap at Moonee Valley in March of last year. After four starts at two, Isthmus resumed...